Sanzaru Games' Glen Egan announced on Gametrailer TV that Sly Cooper: Thieves in Time will launch simultaneously on PS3 and PS Vita later this year. Not only that, but the game will feature cross platform compatibility, giving you the option of switching between playing it on PS3 and PS Vita as it will be the exact same game.
Sounds like Sony are hitting their stride with what they want to do with PS Vita, and hopefully this is something that more games will be capable of in the future.